Ext.DomQuery = function()
{
	var cache = {}, simpleCache = {}, valueCache = {}, nonSpace = /\S/, trimRe = /^\s+|\s+$/g, tplRe = /\{(\d+)\}/g, modeRe = /^(\s?[\/>+~]\s?|\s|$)/, tagTokenRe = /^(#)?([\w\-\*]+)/, nthRe = /(\d*)n\+?(\d*)/, nthRe2 = /\D/,
	// This is for IE MSXML which does not support expandos.
	// IE runs the same speed using setAttribute, however FF slows way down
	// and Safari completely fails so they need to continue to use expandos.
	isIE = window.ActiveXObject ? true : false, key = 30803;

	// this eval is stop the compressor from
	// renaming the variable to something shorter
	eval("var batch = 30803;");

	// Retrieve the child node from a particular
	// parent at the specified index.
	function child( parent, index )
	{
		var i = 0, n = parent.firstChild;
		while(n)
		{
			if( n.nodeType == 1 )
			{
				if( ++i == index )
				{
					return n;
				}
			}
			n = n.nextSibling;
		}
		return null;
	}

	// retrieve the next element node
	function next( n )
	{
		while((n = n.nextSibling) && n.nodeType != 1);
		return n;
	}

	// retrieve the previous element node
	function prev( n )
	{
		while((n = n.previousSibling) && n.nodeType != 1);
		return n;
	}

	// Mark each child node with a nodeIndex skipping and
	// removing empty text nodes.
	function children( parent )
	{
		var n = parent.firstChild, nodeIndex = -1, nextNode;
		while(n)
		{
			nextNode = n.nextSibling;
			// clean worthless empty nodes.
			if( n.nodeType == 3 && !nonSpace.test(n.nodeValue) )
			{
				parent.removeChild(n);
			}
			else
			{
				// add an expando nodeIndex
				n.nodeIndex = ++nodeIndex;
			}
			n = nextNode;
		}
		return this;
	}

	// nodeSet - array of nodes
	// cls - CSS Class
	function byClassName( nodeSet, cls )
	{
		if( !cls )
		{
			return nodeSet;
		}
		var result = [], ri = -1;
		for( var i = 0, ci; ci = nodeSet[i]; i++ )
		{
			if( (' ' + ci.className + ' ').indexOf(cls) != -1 )
			{
				result[++ri] = ci;
			}
		}
		return result;
	};

	function attrValue( n, attr )
	{
		// if its an array, use the first node.
		if( !n.tagName && typeof n.length != "undefined" )
		{
			n = n[0];
		}
		if( !n )
		{
			return null;
		}

		if( attr == "for" )
		{
			return n.htmlFor;
		}
		if( attr == "class" || attr == "className" )
		{
			return n.className;
		}
		return n.getAttribute(attr) || n[attr];

	};

	// ns - nodes
	// mode - false, /, >, +, ~
	// tagName - defaults to "*"
	function getNodes( ns, mode, tagName )
	{
		var result = [], ri = -1, cs;
		if( !ns )
		{
			return result;
		}
		tagName = tagName || "*";
		// convert to array
		if( typeof ns.getElementsByTagName != "undefined" )
		{
			ns =
			[
				ns
			];
		}

		// no mode specified, grab all elements by tagName
		// at any depth
		if( !mode )
		{
			for( var i = 0, ni; ni = ns[i]; i++ )
			{
				cs = ni.getElementsByTagName(tagName);
				for( var j = 0, ci; ci = cs[j]; j++ )
				{
					result[++ri] = ci;
				}
			}
			// Direct Child mode (/ or >)
			// E > F or E/F all direct children elements of E that have the tag
		}
		else if( mode == "/" || mode == ">" )
		{
			var utag = tagName.toUpperCase();
			for( var i = 0, ni, cn; ni = ns[i]; i++ )
			{
				cn = ni.childNodes;
				for( var j = 0, cj; cj = cn[j]; j++ )
				{
					if( cj.nodeName == utag || cj.nodeName == tagName || tagName == '*' )
					{
						result[++ri] = cj;
					}
				}
			}
			// Immediately Preceding mode (+)
			// E + F all elements with the tag F that are immediately preceded by an element with the tag E
		}
		else if( mode == "+" )
		{
			var utag = tagName.toUpperCase();
			for( var i = 0, n; n = ns[i]; i++ )
			{
				while((n = n.nextSibling) && n.nodeType != 1);
				if( n && (n.nodeName == utag || n.nodeName == tagName || tagName == '*') )
				{
					result[++ri] = n;
				}
			}
			// Sibling mode (~)
			// E ~ F all elements with the tag F that are preceded by a sibling element with the tag E
		}
		else if( mode == "~" )
		{
			var utag = tagName.toUpperCase();
			for( var i = 0, n; n = ns[i]; i++ )
			{
				while((n = n.nextSibling))
				{
					if( n.nodeName == utag || n.nodeName == tagName || tagName == '*' )
					{
						result[++ri] = n;
					}
				}
			}
		}
		return result;
	}

	function concat( a, b )
	{
		if( b.slice )
		{
			return a.concat(b);
		}
		for( var i = 0, l = b.length; i < l; i++ )
		{
			a[a.length] = b[i];
		}
		return a;
	}

	function byTag( cs, tagName )
	{
		if( cs.tagName || cs == document )
		{
			cs =
			[
				cs
			];
		}
		if( !tagName )
		{
			return cs;
		}
		var result = [], ri = -1;
		tagName = tagName.toLowerCase();
		for( var i = 0, ci; ci = cs[i]; i++ )
		{
			if( ci.nodeType == 1 && ci.tagName.toLowerCase() == tagName )
			{
				result[++ri] = ci;
			}
		}
		return result;
	}

	function byId( cs, id )
	{
		if( cs.tagName || cs == document )
		{
			cs =
			[
				cs
			];
		}
		if( !id )
		{
			return cs;
		}
		var result = [], ri = -1;
		for( var i = 0, ci; ci = cs[i]; i++ )
		{
			if( ci && ci.id == id )
			{
				result[++ri] = ci;
				return result;
			}
		}
		return result;
	}

	// operators are =, !=, ^=, $=, *=, %=, |= and ~=
	// custom can be "{"
	function byAttribute( cs, attr, value, op, custom )
	{
		var result = [], ri = -1, useGetStyle = custom == "{", fn = Ext.DomQuery.operators[op], a, xml, hasXml;

		for( var i = 0, ci; ci = cs[i]; i++ )
		{
			// skip non-element nodes.
			if( ci.nodeType != 1 )
			{
				continue;
			}
			// only need to do this for the first node
			if( !hasXml )
			{
				xml = Ext.DomQuery.isXml(ci);
				hasXml = true;
			}

			// we only need to change the property names if we're dealing with html nodes, not XML
			if( !xml )
			{
				if( useGetStyle )
				{
					a = Ext.DomQuery.getStyle(ci, attr);
				}
				else if( attr == "class" || attr == "className" )
				{
					a = ci.className;
				}
				else if( attr == "for" )
				{
					a = ci.htmlFor;
				}
				else if( attr == "href" )
				{
					// getAttribute href bug
					// http://www.glennjones.net/Post/809/getAttributehrefbug.htm
					a = ci.getAttribute("href", 2);
				}
				else
				{
					a = ci.getAttribute(attr);
				}
			}
			else
			{
				a = ci.getAttribute(attr);
			}
			if( (fn && fn(a, value)) || (!fn && a) )
			{
				result[++ri] = ci;
			}
		}
		return result;
	}

	function byPseudo( cs, name, value )
	{
		return Ext.DomQuery.pseudos[name](cs, value);
	}

	function nodupIEXml( cs )
	{
		var d = ++key, r;
		cs[0].setAttribute("_nodup", d);
		r =
		[
			cs[0]
		];
		for( var i = 1, len = cs.length; i < len; i++ )
		{
			var c = cs[i];
			if( !c.getAttribute("_nodup") != d )
			{
				c.setAttribute("_nodup", d);
				r[r.length] = c;
			}
		}
		for( var i = 0, len = cs.length; i < len; i++ )
		{
			cs[i].removeAttribute("_nodup");
		}
		return r;
	}

	function nodup( cs )
	{
		if( !cs )
		{
			return [];
		}
		var len = cs.length, c, i, r = cs, cj, ri = -1;
		if( !len || typeof cs.nodeType != "undefined" || len == 1 )
		{
			return cs;
		}
		if( isIE && typeof cs[0].selectSingleNode != "undefined" )
		{
			return nodupIEXml(cs);
		}
		var d = ++key;
		cs[0]._nodup = d;
		for( i = 1; c = cs[i]; i++ )
		{
			if( c._nodup != d )
			{
				c._nodup = d;
			}
			else
			{
				r = [];
				for( var j = 0; j < i; j++ )
				{
					r[++ri] = cs[j];
				}
				for( j = i + 1; cj = cs[j]; j++ )
				{
					if( cj._nodup != d )
					{
						cj._nodup = d;
						r[++ri] = cj;
					}
				}
				return r;
			}
		}
		return r;
	}

	function quickDiffIEXml( c1, c2 )
	{
		var d = ++key, r = [];
		for( var i = 0, len = c1.length; i < len; i++ )
		{
			c1[i].setAttribute("_qdiff", d);
		}
		for( var i = 0, len = c2.length; i < len; i++ )
		{
			if( c2[i].getAttribute("_qdiff") != d )
			{
				r[r.length] = c2[i];
			}
		}
		for( var i = 0, len = c1.length; i < len; i++ )
		{
			c1[i].removeAttribute("_qdiff");
		}
		return r;
	}

	function quickDiff( c1, c2 )
	{
		var len1 = c1.length, d = ++key, r = [];
		if( !len1 )
		{
			return c2;
		}
		if( isIE && typeof c1[0].selectSingleNode != "undefined" )
		{
			return quickDiffIEXml(c1, c2);
		}
		for( var i = 0; i < len1; i++ )
		{
			c1[i]._qdiff = d;
		}
		for( var i = 0, len = c2.length; i < len; i++ )
		{
			if( c2[i]._qdiff != d )
			{
				r[r.length] = c2[i];
			}
		}
		return r;
	}

	function quickId( ns, mode, root, id )
	{
		if( ns == root )
		{
			var d = root.ownerDocument || root;
			return d.getElementById(id);
		}
		ns = getNodes(ns, mode, "*");
		return byId(ns, id);
	}

	return {
		getStyle: function( el, name )
		{
			return Ext.fly(el).getStyle(name);
		},
		/**
		 * Compiles a selector/xpath query into a reusable function. The returned function takes one parameter "root" (optional), which is the context node from
		 * where the query should start.
		 * 
		 * @param {String} selector The selector/xpath query
		 * @param {String} type (optional) Either "select" (the default) or "simple" for a simple selector match
		 * @return {Function}
		 */
		compile: function( path, type )
		{
			type = type || "select";

			// setup fn preamble
			var fn =
			[
				"var f = function(root){\n var mode; ++batch; var n = root || document;\n"
			], mode, lastPath, matchers = Ext.DomQuery.matchers, matchersLn = matchers.length, modeMatch,
			// accept leading mode switch
			lmode = path.match(modeRe);

			if( lmode && lmode[1] )
			{
				fn[fn.length] = 'mode="' + lmode[1].replace(trimRe, "") + '";';
				path = path.replace(lmode[1], "");
			}

			// strip leading slashes
			while(path.substr(0, 1) == "/")
			{
				path = path.substr(1);
			}

			while(path && lastPath != path)
			{
				lastPath = path;
				var tokenMatch = path.match(tagTokenRe);
				if( type == "select" )
				{
					if( tokenMatch )
					{
						// ID Selector
						if( tokenMatch[1] == "#" )
						{
							fn[fn.length] = 'n = quickId(n, mode, root, "' + tokenMatch[2] + '");';
						}
						else
						{
							fn[fn.length] = 'n = getNodes(n, mode, "' + tokenMatch[2] + '");';
						}
						path = path.replace(tokenMatch[0], "");
					}
					else if( path.substr(0, 1) != '@' )
					{
						fn[fn.length] = 'n = getNodes(n, mode, "*");';
					}
					// type of "simple"
				}
				else
				{
					if( tokenMatch )
					{
						if( tokenMatch[1] == "#" )
						{
							fn[fn.length] = 'n = byId(n, "' + tokenMatch[2] + '");';
						}
						else
						{
							fn[fn.length] = 'n = byTag(n, "' + tokenMatch[2] + '");';
						}
						path = path.replace(tokenMatch[0], "");
					}
				}
				while(!(modeMatch = path.match(modeRe)))
				{
					var matched = false;
					for( var j = 0; j < matchersLn; j++ )
					{
						var t = matchers[j];
						var m = path.match(t.re);
						if( m )
						{
							fn[fn.length] = t.select.replace(tplRe, function( x, i )
							{
								return m[i];
							});
							path = path.replace(m[0], "");
							matched = true;
							break;
						}
					}
					// prevent infinite loop on bad selector
					if( !matched )
					{
						throw 'Error parsing selector, parsing failed at "' + path + '"';
					}
				}
				if( modeMatch[1] )
				{
					fn[fn.length] = 'mode="' + modeMatch[1].replace(trimRe, "") + '";';
					path = path.replace(modeMatch[1], "");
				}
			}
			// close fn out
			fn[fn.length] = "return nodup(n);\n}";

			// eval fn and return it
			eval(fn.join(""));
			return f;
		},

		/**
		 * Selects a group of elements.
		 * 
		 * @param {String} selector The selector/xpath query (can be a comma separated list of selectors)
		 * @param {Node/String} root (optional) The start of the query (defaults to document).
		 * @return {Array} An Array of DOM elements which match the selector. If there are no matches, and empty Array is returned.
		 */
		jsSelect: function( path, root, type )
		{
			// set root to doc if not specified.
			root = root || document;

			if( typeof root == "string" )
			{
				root = document.getElementById(root);
			}
			var paths = path.split(","), results = [];

			// loop over each selector
			for( var i = 0, len = paths.length; i < len; i++ )
			{
				var subPath = paths[i].replace(trimRe, "");
				// compile and place in cache
				if( !cache[subPath] )
				{
					cache[subPath] = Ext.DomQuery.compile(subPath);
					if( !cache[subPath] )
					{
						throw subPath + " is not a valid selector";
					}
				}
				var result = cache[subPath](root);
				if( result && result != document )
				{
					results = results.concat(result);
				}
			}

			// if there were multiple selectors, make sure dups
			// are eliminated
			if( paths.length > 1 )
			{
				return nodup(results);
			}
			return results;
		},
		isXml: function( el )
		{
			var docEl = (el ? el.ownerDocument || el : 0).documentElement;
			return docEl ? docEl.nodeName !== "HTML" : false;
		},
		select: document.querySelectorAll ? function( path, root, type )
		{
			root = root || document;
			if( !Ext.DomQuery.isXml(root) )
			{
				try
				{
					var cs = root.querySelectorAll(path);
					return Ext.toArray(cs);
				}
				catch (ex)
				{
				}
			}
			return Ext.DomQuery.jsSelect.call(this, path, root, type);
		} : function( path, root, type )
		{
			return Ext.DomQuery.jsSelect.call(this, path, root, type);
		},

		/**
		 * Selects a single element.
		 * 
		 * @param {String} selector The selector/xpath query
		 * @param {Node} root (optional) The start of the query (defaults to document).
		 * @return {Element} The DOM element which matched the selector.
		 */
		selectNode: function( path, root )
		{
			return Ext.DomQuery.select(path, root)[0];
		},

		/**
		 * Selects the value of a node, optionally replacing null with the defaultValue.
		 * 
		 * @param {String} selector The selector/xpath query
		 * @param {Node} root (optional) The start of the query (defaults to document).
		 * @param {String} defaultValue (optional)
		 * @return {String}
		 */
		selectValue: function( path, root, defaultValue )
		{
			path = path.replace(trimRe, "");
			if( !valueCache[path] )
			{
				valueCache[path] = Ext.DomQuery.compile(path, "select");
			}
			var n = valueCache[path](root), v;
			n = n[0] ? n[0] : n;

			// overcome a limitation of maximum textnode size
			// Rumored to potentially crash IE6 but has not been confirmed.
			// http://reference.sitepoint.com/javascript/Node/normalize
			// https://developer.mozilla.org/En/DOM/Node.normalize
			if( typeof n.normalize == 'function' ) n.normalize();

			v = (n && n.firstChild ? n.firstChild.nodeValue : null);
			return ((v === null || v === undefined || v === '') ? defaultValue : v);
		},

		/**
		 * Selects the value of a node, parsing integers and floats. Returns the defaultValue, or 0 if none is specified.
		 * 
		 * @param {String} selector The selector/xpath query
		 * @param {Node} root (optional) The start of the query (defaults to document).
		 * @param {Number} defaultValue (optional)
		 * @return {Number}
		 */
		selectNumber: function( path, root, defaultValue )
		{
			var v = Ext.DomQuery.selectValue(path, root, defaultValue || 0);
			return parseFloat(v);
		},

		/**
		 * Returns true if the passed element(s) match the passed simple selector (e.g. div.some-class or span:first-child)
		 * 
		 * @param {String/HTMLElement/Array} el An element id, element or array of elements
		 * @param {String} selector The simple selector to test
		 * @return {Boolean}
		 */
		is: function( el, ss )
		{
			if( typeof el == "string" )
			{
				el = document.getElementById(el);
			}
			var isArray = Ext.isArray(el), result = Ext.DomQuery.filter(isArray ? el :
			[
				el
			], ss);
			return isArray ? (result.length == el.length) : (result.length > 0);
		},

		/**
		 * Filters an array of elements to only include matches of a simple selector (e.g. div.some-class or span:first-child)
		 * 
		 * @param {Array} el An array of elements to filter
		 * @param {String} selector The simple selector to test
		 * @param {Boolean} nonMatches If true, it returns the elements that DON'T match the selector instead of the ones that match
		 * @return {Array} An Array of DOM elements which match the selector. If there are no matches, and empty Array is returned.
		 */
		filter: function( els, ss, nonMatches )
		{
			ss = ss.replace(trimRe, "");
			if( !simpleCache[ss] )
			{
				simpleCache[ss] = Ext.DomQuery.compile(ss, "simple");
			}
			var result = simpleCache[ss](els);
			return nonMatches ? quickDiff(result, els) : result;
		},

		/**
		 * Collection of matching regular expressions and code snippets. Each capture group within () will be replace the {} in the select statement as specified by
		 * their index.
		 */
		matchers:
		[
		    {
			    re: /^\.([\w\-]+)/,
			    select: 'n = byClassName(n, " {1} ");'
		    },
		    {
			    re: /^\:([\w\-]+)(?:\(((?:[^\s>\/]*|.*?))\))?/,
			    select: 'n = byPseudo(n, "{1}", "{2}");'
		    },
		    {
			    re: /^(?:([\[\{])(?:@)?([\w\-]+)\s?(?:(=|.=)\s?(["']?)(.*?)\4)?[\]\}])/,
			    select: 'n = byAttribute(n, "{2}", "{5}", "{3}", "{1}");'
		    },
		    {
			    re: /^#([\w\-]+)/,
			    select: 'n = byId(n, "{1}");'
		    },
		    {
			    re: /^@([\w\-]+)/,
			    select: 'return {firstChild:{nodeValue:attrValue(n, "{1}")}};'
		    }
		],

		/**
		 * Collection of operator comparison functions. The default operators are =, !=, ^=, $=, *=, %=, |= and ~=. New operators can be added as long as the match
		 * the format <i>c</i>= where <i>c</i> is any character other than space, &gt; &lt;.
		 */
		operators:
		{
			"=": function( a, v )
			{
				return a == v;
			},
			"!=": function( a, v )
			{
				return a != v;
			},
			"^=": function( a, v )
			{
				return a && a.substr(0, v.length) == v;
			},
			"$=": function( a, v )
			{
				return a && a.substr(a.length - v.length) == v;
			},
			"*=": function( a, v )
			{
				return a && a.indexOf(v) !== -1;
			},
			"%=": function( a, v )
			{
				return (a % v) == 0;
			},
			"|=": function( a, v )
			{
				return a && (a == v || a.substr(0, v.length + 1) == v + '-');
			},
			"~=": function( a, v )
			{
				return a && (' ' + a + ' ').indexOf(' ' + v + ' ') != -1;
			}
		},

		/**
		 * <p>Object hash of "pseudo class" filter functions which are used when filtering selections. Each function is passed two parameters:</p><div
		 * class="mdetail-params"><ul> <li><b>c</b> : Array<div class="sub-desc">An Array of DOM elements to filter.</div></li> <li><b>v</b> : String<div
		 * class="sub-desc">The argument (if any) supplied in the selector.</div></li> </ul></div> <p>A filter function returns an Array of DOM elements which
		 * conform to the pseudo class.</p> <p>In addition to the provided pseudo classes listed above such as <code>first-child</code> and
		 * <code>nth-child</code>, developers may add additional, custom psuedo class filters to select elements according to application-specific requirements.</p>
		 * <p>For example, to filter <code>&lt;a></code> elements to only return links to <i>external</i> resources:</p> <code><pre>
		 * Ext.DomQuery.pseudos.external = function( c, v )
		 * {
		 * 	var r = [], ri = -1;
		 * 	for( var i = 0, ci; ci = c[i]; i++ )
		 * 	{
		 * 		//      Include in result set only if it's a link to an external resource
		 * 		if( ci.hostname != location.hostname )
		 * 		{
		 * 			r[++ri] = ci;
		 * 		}
		 * 	}
		 * 	return r;
		 * };
		 * </pre></code> Then external links could be gathered with the following statement:<code><pre>
		 * var externalLinks = Ext.select(&quot;a:external&quot;);
		 * </code></pre>
		 */
		pseudos:
		{
			"first-child": function( c )
			{
				var r = [], ri = -1, n;
				for( var i = 0, ci; ci = n = c[i]; i++ )
				{
					while((n = n.previousSibling) && n.nodeType != 1);
					if( !n )
					{
						r[++ri] = ci;
					}
				}
				return r;
			},

			"last-child": function( c )
			{
				var r = [], ri = -1, n;
				for( var i = 0, ci; ci = n = c[i]; i++ )
				{
					while((n = n.nextSibling) && n.nodeType != 1);
					if( !n )
					{
						r[++ri] = ci;
					}
				}
				return r;
			},

			"nth-child": function( c, a )
			{
				var r = [], ri = -1, m = nthRe.exec(a == "even" && "2n" || a == "odd" && "2n+1" || !nthRe2.test(a) && "n+" + a || a), f = (m[1] || 1) - 0, l = m[2] - 0;
				for( var i = 0, n; n = c[i]; i++ )
				{
					var pn = n.parentNode;
					if( batch != pn._batch )
					{
						var j = 0;
						for( var cn = pn.firstChild; cn; cn = cn.nextSibling )
						{
							if( cn.nodeType == 1 )
							{
								cn.nodeIndex = ++j;
							}
						}
						pn._batch = batch;
					}
					if( f == 1 )
					{
						if( l == 0 || n.nodeIndex == l )
						{
							r[++ri] = n;
						}
					}
					else if( (n.nodeIndex + l) % f == 0 )
					{
						r[++ri] = n;
					}
				}

				return r;
			},

			"only-child": function( c )
			{
				var r = [], ri = -1;;
				for( var i = 0, ci; ci = c[i]; i++ )
				{
					if( !prev(ci) && !next(ci) )
					{
						r[++ri] = ci;
					}
				}
				return r;
			},

			"empty": function( c )
			{
				var r = [], ri = -1;
				for( var i = 0, ci; ci = c[i]; i++ )
				{
					var cns = ci.childNodes, j = 0, cn, empty = true;
					while(cn = cns[j])
					{
						++j;
						if( cn.nodeType == 1 || cn.nodeType == 3 )
						{
							empty = false;
							break;
						}
					}
					if( empty )
					{
						r[++ri] = ci;
					}
				}
				return r;
			},

			"contains": function( c, v )
			{
				var r = [], ri = -1;
				for( var i = 0, ci; ci = c[i]; i++ )
				{
					if( (ci.textContent || ci.innerText || '').indexOf(v) != -1 )
					{
						r[++ri] = ci;
					}
				}
				return r;
			},

			"nodeValue": function( c, v )
			{
				var r = [], ri = -1;
				for( var i = 0, ci; ci = c[i]; i++ )
				{
					if( ci.firstChild && ci.firstChild.nodeValue == v )
					{
						r[++ri] = ci;
					}
				}
				return r;
			},

			"checked": function( c )
			{
				var r = [], ri = -1;
				for( var i = 0, ci; ci = c[i]; i++ )
				{
					if( ci.checked == true )
					{
						r[++ri] = ci;
					}
				}
				return r;
			},

			"not": function( c, ss )
			{
				return Ext.DomQuery.filter(c, ss, true);
			},

			"any": function( c, selectors )
			{
				var ss = selectors.split('|'), r = [], ri = -1, s;
				for( var i = 0, ci; ci = c[i]; i++ )
				{
					for( var j = 0; s = ss[j]; j++ )
					{
						if( Ext.DomQuery.is(ci, s) )
						{
							r[++ri] = ci;
							break;
						}
					}
				}
				return r;
			},

			"odd": function( c )
			{
				return this["nth-child"](c, "odd");
			},

			"even": function( c )
			{
				return this["nth-child"](c, "even");
			},

			"nth": function( c, a )
			{
				return c[a - 1] || [];
			},

			"first": function( c )
			{
				return c[0] || [];
			},

			"last": function( c )
			{
				return c[c.length - 1] || [];
			},

			"has": function( c, ss )
			{
				var s = Ext.DomQuery.select, r = [], ri = -1;
				for( var i = 0, ci; ci = c[i]; i++ )
				{
					if( s(ss, ci).length > 0 )
					{
						r[++ri] = ci;
					}
				}
				return r;
			},

			"next": function( c, ss )
			{
				var is = Ext.DomQuery.is, r = [], ri = -1;
				for( var i = 0, ci; ci = c[i]; i++ )
				{
					var n = next(ci);
					if( n && is(n, ss) )
					{
						r[++ri] = ci;
					}
				}
				return r;
			},

			"prev": function( c, ss )
			{
				var is = Ext.DomQuery.is, r = [], ri = -1;
				for( var i = 0, ci; ci = c[i]; i++ )
				{
					var n = prev(ci);
					if( n && is(n, ss) )
					{
						r[++ri] = ci;
					}
				}
				return r;
			}
		}
	};
}();

//公布别名
Ext.query = Ext.DomQuery.select;
